In 3 1/2 to 4-quart slow cooker, combine pork, pineapple, bell pepper, brown sugar, ginger, vinegar and soy sauce; mix well.
Cover; cook on low setting for 6 to 8 hours.
About 25 minutes before serving, cook rice in 1 1/3 cups water as directed on package.
About 5 minutes before serving, in small bowl, combine 3 tablespoons water and cornstarch; blend well. Stir into pork mixture in slow cooker. Cover; cook on high setting for an additional 5 minutes or until thickened. Serve pork mixture over rice.